test variable value?

From: Date: Wed, 11 Jan 2006 09:56:38 +0000
Subject: test variable value?
Groups: php.general 
Request: Send a blank email to php-general+get-228457@lists.php.net to get a copy of this message
Hello What is the best way to determine if a variable has no value? if ($var= '') or if ($var= 'null') Can 'null' be used here? Thanks -Willa

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